Donaldson Torit DFO 2-4, Installation And Operation Manual

15

Donaldson Company, Inc.

Maintenance Information

Instruct all personnel on safe use and maintenance 
procedures.

Use proper equipment and adopt 

all safety precautions needed 

for servicing equipment.  Electrical service 

or maintenance work must be performed by 

a qualified electrician and comply with all 

applicable national and local codes.
Turn power off and lock out electrical 

power sources before performing service or 

maintenance work.
Do not install in classified hazardous 

atmospheres without an enclosure rated for 

the application.
Turn compressed air supply OFF and bleed 

lines before performing service or maintenance 

work.

Do not set compressed-air 

pressure above 60-psig.  

Component damage can occur.
All compressed air components must be sized 

to meet the maximum system requirements of 

60-psig supply pressure.
The compressed-air supply must be oil 

and moisture free. Contamination in the 

compressed air used to clean filters will result 

in poor cleaning, cleaning valve failure, or poor 

collector performance.
Purge compressed air lines to remove debris 

before connecting to the unit’s compressed air 

manifold.

Operational Checklist

1.  Monitor the physical condition of the collector and 

repair or replace any damaged components. 

Routine inspections will minimize downtime and 
maintain optimum system performance. This 
is particularly important on continuous-duty 
applications. 

Periodically check the compressed air components 
and replace compressed air filters. 

Drain moisture following the manufacturer’s 
instructions. With the compressed air supply ON, 
check the cleaning valves, solenoid valves, and 
tubing for leaks. Replace as necessary. 

2.  Monitor pressure drop across filters.
 

Abnormal changes in pressure drop indicate a 
change in operating conditions and possibly a fault 
to be corrected.  For example, prolonged lack of 
compressed air will cause an excess build-up of dust 
on the filters resulting in increased pressure drop. 
Cleaning off-line with no flow usually restores the 
filters to normal pressure drop.

3.  Monitor exhaust.
4.  Monitor dust disposal.

Filter Removal and Installation

Use proper safety and protective 

equipment when removing 

contaminants and filters.
Dirty filters may be heavier than they appear.
Use care when removing filters to avoid 

personal injury.

Filter Removal

1.  Turn power to unit OFF.
2.  Start at the top access port.
3.  Remove access cover.  For units without Bag-In/Bag-

Out:  remove access cover by lifting latch handle 

and lifting cover to remove from yoke.  For units with 

Bag-In/Bag-Out:  lift up access cover handle and  

while pushing in on cover, slide access cover to the 

side 1-inch to remove access cover.  

If the access cover clamp fails to operate smoothly, 

apply WD-40

®

 to the riveted pivot points and to the 

clamp rod where it passes through the outside of the 

cover.  Wipe off overspray.

4.  Break the seal between the filter cartridge and the 

sealing surface. 

WD-40® is a registered trademark of WD-40 Company.

NOTICE